Heh guys new to the ls community i have a 4.8 ls in a 78 chevy luv with a 4l60e in it turned out i have a bad transmission and a bent valve so got new heads and going to put springs on them and i found a 50 dollar set new and cant find any one using them there PCE272.1002 anyone got any info i think there .620 lift

 

Those are Speedmaster/ProComp valve springs. I don't know what the quality of them is like, but I always try and stick with brands I other use and can find plenty of opinions about.